Now that you have booked a session the question "What will I wear?!" is looming in the back of your brain. I'm here to help!
How to choose your outfit(s)
First, think about what type of shoot you are doing. Is this a family shoot, maternity, or couples shoot? Secondly, what will the weather be like the day of your shoot? Where will these photos be displayed (you want the style to fit the area they will be displayed in)?
Choose an overall style to your outfit(s): boho, western, elegant, casual, etc. Once you have narrowed down your style, take a look in your closet(s) to see what each person being photographed already has that fits the vibe. Next, throw out any pieces that have loud colors or patterns. Try to stick with colors that are neutral, earthy, and/or calming. Once you have a few coordinating pieces (not matching) picked out, start filling in the missing holes with new purchases.
I recommend coordinating outfits rather than having people match. This adds a pleasing aesthetic flow to your photos and allows each individual to dress in a way that better expresses their style.
Overall:
Make sure you feel confident, but most importantly comfortable, in what you choose to wear. If you are uncomfortable or stiff in your clothes you will look just that in your photos. You need to be able to move freely and have good range of motion.
Dresses:
If you are going with a dress here are a few things to consider.
1. The wind may be blowing and a short flowy dress means you could be flashing people, consider going with a longer flowy dress.
2. A short and tight dress limits the types of poses you are able to do.
Lastly, ask yourself this: Does my outfit (or outfits) represent the version of myself I want to present to the world or display in my home/office?